Compaction of electrical insulation for joining insulated conductors
An apparatus and method for coupling ends of two insulated conductors includes coupling a core of a first insulated conductor to a core of a second insulated conductor. Exposed portions of the cores are located inside a box. Electrically insulating powder material is placed into the box and a force is applied to first and second plungers to compact the powder material. Additional electrically insulating powder material may placed into the box and a subsequent force applied to compact the powder material into compacted powder material that surrounds the exposed portions of the cores. The compacted powder material is formed into a substantially cylindrical shape. A sleeve is placed over the compacted powder material and coupled to the jackets of the insulated conductors.
1. An apparatus for coupling ends of two insulated conductors, a first insulated conductor comprising a first core, a first electrical insulator, and a first jacket, a second insulated conductor comprising a second core, a second electrical insulator, and a second jacket, the apparatus comprising:
a box comprising:
a first side;
a second side;
a first conductor opening on the first side, the first conductor opening configured to accommodate an end portion of the first jacket of the first insulated conductor;
a second conductor opening on the second side, the second conductor opening configured to accommodate an end portion of the second jacket of the second insulated conductor; and
a first plunger opening;
a second plunger opening;
a first plunger configured for placement in the first plunger opening of the box;
a second plunger configured for placement in the second plunger opening of the box; and
a drive mechanism configured to provide force to the first plunger;
whereby, when the first insulated conductor and the second insulated conductor are in place with end portions of the first jacket and the second jacket in the first conductor opening and the second conductor opening, respectively, the first core and the second core at least partially exposed in the box, and electrically insulating powder material present in the box, activation of the drive mechanism results in the electrically insulating powder material being compacted into a substantially cylindrical shape with an outside diameter relatively similar to an outside diameter of at least one of the two insulated conductors.
2. The apparatus of claim 1 , further comprising:
an additional drive mechanism configured to provide force to the second plunger; and
gears connecting the first plunger and the second plunger.
3. The apparatus of claim 1 , wherein the box comprises a port configured to allow the electrically insulating powder material to pass from an exterior of the box to an interior of the box.
4. The apparatus of claim 1 , wherein the box comprises at least two portions configured to clamp together around the end portions of the two insulated conductors.
5. The apparatus of claim 2 , wherein the drive mechanism is configured to hydraulically apply a substantially horizontal force in a first direction, and wherein the additional drive mechanism is configured to hydraulically apply a substantially horizontal force in a second direction, the second direction being substantially opposite the first direction.
6. The apparatus of claim 2 , wherein the first plunger is configured to apply force in a first direction and the second plunger is configured to apply force in a second direction, the second direction being substantially opposite the first direction.
7. The apparatus of claim 6 , wherein the first plunger and the second plunger are configured to apply force in the first direction and the second direction substantially simultaneously.
8. The apparatus of claim 7 , wherein the first plunger and the second plunger are configured to substantially equal magnitude force.
9. The apparatus of claim 1 , wherein the electrically insulating powder material present in the box is configured to be at an elevated temperature above ambient temperature when compacted into the substantially cylindrical shape.